Yet gold all is not that doth golden seeme.
Spenser: Faerie Queene, II.
Double, double, toil and trouble.—Macbeth.
Πόνος, πόνῳ, πόνον, φέρει.—Sophocles: Ajax.
We shall not look upon his like again.—Hamlet, I.
Quando ullum inveniet parem?—Horace.
None but himself can be his parallel.—Theobald.